The following code shows how to get return value from a function in a Python class.Exampleclass Score():     def __init__(self):         self.score = 0         self.num_enemies = 5         self.num_lives = 3     def setScore(self, num):         self.score = num     def getScore(self):          return self.score     def getEnemies(self):         return self.num_enemies     def getLives(self):         return self.num_lives         s = Score() s.setScore(9) print s.getScore() print s.getEnemies() print s.getLives()Output9 5 3

The return statement makes a Python function to exit and hand back a value to its caller. The objective of functions in general is to take in inputs and return something. A return statement, once executed, immediately halts execution of a function, even if it is not the last statement in the function.Functions that return values are sometimes called fruitful functions.Exampledef sum(a, b):      return a+b sum(5, 16)Output21Everything in Python, almost everything is an object. Lists, dictionaries, tuples are also Python objects. The code below shows a Python function that returns a Python object; a dictionary.Example# This function returns ... Read More

By default, all .NET objects are reference types and their equality and hash code is determined by their memory address. Additionally, assigning a variable to an existing object just makes it point to that address in memory, so there is no costly copying occurring. It appears that this is true for python objects as well to certain extent.Properties of Python objects: All python objects havea unique identity (an integer, returned by id(x)); a type (returned by type(x))You cannot change the identity; You cannot change the type.Some objects allow you to change their content (without changing the identity or the type, that is).Some ... Read More

JSON can be abbreviated as JavaScript Object Notation. Json means a script of a text file in a programming language to transfer and store the data. Json supported by the python programming language using a built-in package named json. The Json text is given in the quoted string format which contains in the key and value within the curly braces{}. This looks like a dictionary format in python programming language. For using this json package in the python programming language we have to import the json package in python script. In the Json package we have so ... Read More

JSON can be abbreviated as JavaScript Object Notation. Json means a script of a text file in a programming language to transfer and store the data. Json supported by the python programming language using a built-in package named json. The Json text is given in the quoted string format which contains in the key and value within the curly braces{}. This looks like a dictionary format in python programming language. For using the json package in the python programming language we have to import the json package in python script. In the Json package we have ... Read More

We know that Python is an object oriented programming language. By using the oops concept we can make the code and functions work together in a better way. The OOPs in python help us to deal with the real time entities with inheritance, polymorphism, encapsulation etc. Group of objects is called a class. The class contains the blueprint, which takes as the reference to create the object. This contains attributes and methods in a logical entity. Let’s understand the usage of the class in object oriented programming language by a real time scenario. Consider a library. ... Read More

We are currently coding of python C methods are being used. The base of all the libraries such as Numpy, Opencv, pytorch etc are built with the C and C++ i.e. these libraries internally call the Compiled C code where code will be executed in the machine and the result will be return in python wrapper. Why are we using the C methods in python? The reason why we are using the C method in python is the performance. The python performance will be decreased because of the dynamic typing. It has to reduce the type of operands to ... Read More

Declarations anywhere in the class(other than in __init__) and declarations in the __init__method are not the same. The following code shows this to be true.Exampleimport sys class foo():     print 'within class'     def __init__(self):         print 'within init'     def do_smthng(self):         print 'do something' def main():     f=foo()     f.do_smthng()     return 0 if __name__ == '__main__':     sys.exit( main() )Outputwithin class within init do something

Django is one of the frameworks used along with python to create the web pages in an efficient manner. It is also called as the framework included with batteries why because by default the Django framework gives the admin interface and database interface like SQLite 3 etc. It also provides us the default readymade components namely user authentication handling like sign in, signup and sign out. It provides the management panel for our website, forms, uploading the files etc. Why are we using the Django framework? Django is known for its scalability and comprehensive documentation. This framework is used by ... Read More

OOPs is abbreviated as object oriented programming language. It helps us to deal with the real time entities with inheritance, polymorphism, encapsulation etc. By using the oops concept we can make the code and functions work together in a better way. Group of objects is called a class. The class contains the blueprint, which takes as the reference to create the object. This contains attributes and methods in a logical entity. Now let’s see why we have to split the code into multiple classes. If we create the entire code in the single class, it will be easy to write ... Read More